S-91205A716 1/2"-13 x 1 1/2" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws
Alloy Steel Thread-Locking Socket Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional holding power with 170,000 psi tensile strength, ideal for high-stress industrial assemblies.
- Vibration-resistant locking provided by the nylon patch thread locker, maintaining clamp load integrity in dynamic environments.
- Superior corrosion resistance from the black-oxide finish, extending service life in demanding conditions.
- Precise Class 3A thread fit ensures reliable engagement and reduces the risk of cross-threading during installation.
- High torque capability with the 3/8" hex drive and standard socket head, allowing for secure tightening in confined spaces.
- Wide temperature tolerance from -70° to 250°F, making it suitable for applications exposed to thermal cycling.
- Full thread coverage along the 1-1/2" length provides consistent clamping force across the entire fastener.
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in heavy machinery, automotive, and aerospace sectors where vibration loosening and corrosion compromise joint integrity. The nylon patch thread locker effectively secures the UNC coarse thread against dynamic loads, while the high tensile strength and Rockwell C37 hardness ensure durability under extreme mechanical stress. Its fully threaded design and Class 3A precision facilitate easy alignment and uniform load distribution, reducing installation errors and maintenance downtime in industrial fastening applications.
Specification Summary & Compliance
This socket head cap screw features a 1/2"-13 UNC coarse thread with Class 3A fit for high precision. It is manufactured in compliance with ASME B18.3 and ASTM A574 specifications, ensuring dimensional accuracy and material consistency. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety standards for global industrial use.
